34 lines
930 B
Rust
34 lines
930 B
Rust
// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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#[deriving(Clone, Show)]
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enum foo {
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a(uint),
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b(String),
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}
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fn check_log<T: std::fmt::Show>(exp: String, v: T) {
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assert_eq!(exp, format!("{}", v));
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}
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pub fn main() {
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let mut x = Some(a(22u));
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let exp = "Some(a(22))".to_string();
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let act = format!("{}", x);
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assert_eq!(act, exp);
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check_log(exp, x);
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x = None;
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let exp = "None".to_string();
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let act = format!("{}", x);
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assert_eq!(act, exp);
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check_log(exp, x);
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}
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